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agasfer [191]
3 years ago
12

Katie knew that 70 + 70 = 140. Explain how she can use this double to solve 70 + 89.

Mathematics
2 answers:
grigory [225]3 years ago
8 0
Just add 19 to 140.
White raven [17]3 years ago
6 0
She can use this double by first finding the different in between 70 and 89, which is 19. After finding that difference she should add 19 to the result of the double.
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Answer:

3) 16

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3 years ago
A line passes through the point (-6,9) and has a slope of 3/2. Write an equation in slope-intercept form for this line.
BaLLatris [955]

Answer:

y=3/2x+18

Step-by-step explanation:

Hi there!

We are given a point (-6,9) and a slope of 3/2

We want to write the equation of this line in slope-intercept form

Slope-intercept form is written as y=mx+b, where m is the slope and b is the y intercept

Since we already know the slope of the line as 3/2, we can substitute it as m into the equation:

y=3/2x+b

Now let's find  b

Since the equation of the line passes through (-6,9), we can use it to help solve for b

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9=3/2(-6)+b

Multiply

9=-9+b

Add 9 to both sides

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Substitute 18 as b into the equation.

y=3/2x+18

Hope this helps!

7 0
2 years ago
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AURORKA [14]
The width would be 90.

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3 years ago
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